The answer is
I found this after seeing the OP's comment that Ethan the Brave's answer was on the right tracks.
In the United States,
You can find me in a camp and in a city,
You can find me in a creek and in a grove,
You can find me on a hill and on a land.
Sugar Camp, Sugar City, Sugar Creek, Sugar Grove, Sugar Hill, and Sugar Land are all places in the United States.
You call my nicknames all the time,
"Sugar" is sometimes used as an affectionate nickname.
You are addicted to me,
Many people have a 'sweet tooth', as though they're addicted to sugar.
But if you are careless,
I will kill you.
People with diabetes have to be careful about sugar.
You saw me alone in 2008 and 2013,
Films called Sugar came out in 2008 and 2013.
But you saw me with my girl friend in 2001 and 2006.
2001 Sugar Bowl and 2006 Sugar Bowl?
You know who I am,
But will you find out?
Stylistic with no extra clues.
If anyone's interested in my solving strategy: the OP's comment to Narmer told me the first verse meant there were places called X Camp, X City, X Creek, and so on in the US and I just had to find X. The title, together with the OP's comment to Ethan the Brave, told me it was something close to honey. Sugar immediately came to mind, and the rest was Googling.